Those leaders are North Carolina and Georgia Tech.
Knox, who will be eligible at a new school for one season after graduating in three years, has already taken an unofficial visit to Georgia Tech – as well as South Alabama, Southern Miss and Georgia State.
But Darien Knox fielded calls from North Carolina head coach Roy Williams and assistant Steve Robinson on Monday.
"They want him pretty bad after the Wear twins left," Darien Knox said. "He said they only have two players taller than 6-foot-8. They definitely need some bodies in the post."
Knox said that he and his nephew may take an official visit to either North Carolina or Georgia Tech this weekend.
Knox received a release from Alabama with a trio of stipulations:
1) He can't transfer to an in-state school
2) He can't go to an SEC school
3) He can't play at a school on Alabama's schedule next year.
It was widely speculated that Knox, who averaged 6.3 points and 3.7 rebounds per game last season, wanted to transfer to UAB shortly after deciding to leave Alabama. However, that doesn't appear to be a possibility unless he wins an appeal with the school that is scheduled for Wednesday.
If he does win the appeal, Knox said that both UAB and Ole Miss will be in the mix – as well as UTEP.
Knox is a guy who has averaged about 20 minutes a game over the past two years and averaged 6.0 points and 4.4 rebounds, but has shown glimpses. He averaged 16.5 points and seven boards in two games against South Carolina towards the end of this past season.
"Nothing against Anthony Grant, but his system didn't fit Justin and Justin didn't fit his system," Knox said.
"You can't go wrong with either Georgia Tech or North Carolina," Knox added. "It's the ACC and both schools have made it clear they want Justin."